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47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
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#pragma once
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#include "foundation/types.h"
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/* lock free floating point ring buffer
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generic implementation
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct lfringbuffer_s { } *lfringbuffer_t;
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/* create a ring buffer with the desired number of elements */
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int lfringbuffer_create(lfringbuffer_t *out_ring_buffer, size_t number_of_elements);
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int lfringbuffer_destroy(lfringbuffer_t ring_buffer);
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/* ----- Read functions ----- */
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/* get how many elements can currently be read */
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size_t lfringbuffer_read_available(lfringbuffer_t ring_buffer);
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/* retrieve a pointer that can be read from.
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you might have to call this twice, because of ring buffer wraparound
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call lfringbuffer_read_update() when you are done */
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int lfringbuffer_read_get(lfringbuffer_t ring_buffer, size_t elements_requested, const float **out_buffer, size_t *elements_available);
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/* call to acknowledge that you have read the bytes */
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void lfringbuffer_read_update(lfringbuffer_t ring_buffer, size_t elements_read);
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/* ----- Write functions ----- */
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/* get how many elements can currently be written */
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size_t lfringbuffer_write_available(lfringbuffer_t ring_buffer);
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/* retrieve a pointer that can be written to.
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you might have to call this twice, because of ring buffer wraparound
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call lfringbuffer_write_update() when you are done */
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int lfringbuffer_write_get(lfringbuffer_t ring_buffer, size_t elements_requested, float **out_buffer, size_t *elements_available);
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/* call to acknowledge that you have written the bytes */
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void lfringbuffer_write_update(lfringbuffer_t ring_buffer, size_t elements_read);
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size_t lfringbuffer_write_get_position(lfringbuffer_t ring_buffer);
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#ifdef __cplusplus
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}
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#endif
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